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3 years ago

11

PLSSS HELP IF YOU TURLY KNOW THISS

2 answers:

Phoenix [80]3 years ago

8 0

Answer:

2x + 3y +1

Step-by-step explanation:

-2x + 4x -6y + 9y +3 -2 (arranging)

2x + 3y + 1

umka2103 [35]3 years ago

3 0

Answer: 2+3+1

Step-by-step explanation:

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andriy [413]

Subtract top exponent from bottom. answer is a^2 b^7 c

6 0

3 years ago

Question 15 of 25

Slav-nsk [51]

Answer:

Step-by-step explanation:

Polynomials are factored after they are set equal to 0. This i because the factors of the polynomial are also known as the x-intercepts, and x-intercepts exist where y = 0. Therefore, if the factors of the polynomial are

(x + 8)(x + 4) = 0, then by the Zero Product Property,

x + 8 = 0 so x = -8 or

x + 4 = 0 so x = -4. Choice A.

5 0

3 years ago

The first rule is to add 10, then divide by 2 starting from 2. The second rule is to multiply by 3, then subtract 2 starting fro

julsineya [31]

Answer: $(2, 2), (6, 4), (8, 10), (9, 28)$

Step-by-step explanation:

The first four ordered pairs using the two sequences are: $(2, 2), (6, 4), (8, 10), (9, 28)$

The first rule is to add 10, then divide by 2 starting from 2

Add/Divide:

$10=2+10=12$

$2=12$ ÷ $2=6$

Add/divide again:

$10=6+10=16$

$2 = 20$ ÷ $2 = 10$ $2=16$ ÷ $2=8$

Add/divide again:

$10=8+10=18$

$2=18$ ÷ $2=9$

5 0

2 years ago

It's a question from real and complex numbers which I can't solve. so someone PLZ HeLp

Semmy [17]

Answer:

$\frac{1}{5}$

Step-by-step explanation:

Using the rules of exponents

$a^{m}$ × $a^{n}$ = $a^{(m+n)}$ , $\frac{a^{m} }{a^{n} }$ = $a^{(m-n)}$ , $(a^m)^{n}$ = $a^{mn}$

Simplifying the product of the first 2 terms

$\frac{a^{p^2+pq} }{a^{pq+q^2} }$ × $\frac{a^{q^2+qr} }{a^{qr+r^2} }$

= $a^{p^2-q^2}$ × $a^{q^2-r^2}$

= $a^{p^2-r^2}$

Simplifying the third term

5( $(a^p+r)^{p-r}$

= 5 $a^{(p+r)(p-r)}$ = 5 $a^{(p^2-r^2)}$

Performing the division, that is

$\frac{a^{(p^2-r^2)} }{5a^{(p^2-r^2)} }$ ← cancel $a^{(p^2-r^2)}$ on numerator/ denominator leaves

= $\frac{1}{5}$

4 0

3 years ago

A random sample of 144 observations produced a sample proportion of 0.4. An approximate 90% confidence interval for the populati

EleoNora [17]

Answer:

CI =(0.333, 0.480)

Step-by-step explanation:

The formula for calculating the confidence interval is expressed as shown;

CI = p±Z * √p(1-p)/n±0.5/n

Z is the z-score at 90% confidence

p is the sample proportion

n is the sample size

Given n = 144, p = 0.4 and z-score at 90% CI = 1.645 (from z table)

Substituting this values;

CI = p ± 1.645*√0.4(1-0.4)/144 ±0.5/n

CI = 0.4 ± 1.645*√0.4(0.6)/144 ± 0.5/144

CI = 0.4 ±1.645 * √0.24/144 ± 0.00347

CI = 0.4 ±1.645 * 0.04087± 0.00347

CI = 0.4±0.06723±0.00347

CI =(0.333, 0.480)

7 0

3 years ago